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Refrigeration and Air Conditioning - Interview Questions and Answers

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66. Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of
A. 1 : 1
B. 1 : 9
C. 9 : 1
D. 1 : 3
E. 3 : 1
Explanation:
67. Clapeyron equation is a relation between
A. temperature, pressure and enthalpy
B. specific volume and enthalpy
C. temperature and enthalpy
D. temperature, pressure, and specific volume
E. temperature, pressure, specific value and enthalpy.
Explanation:
68. rick up the incorrect statement
A. lithium bromide used in vapour absorption cycle is nonvolatile
B. lithium bromide plant can't operate below 0�C
C. a separator is used in lithium bromide plant to remove the unwanted water vapour by condensing
D. concentration of solution coming out of lithium bromide generator is more in comparison to that entering the generator
E. weak solution in liquid heat exchanger gives up heat to the strong solution.
Explanation:
69. In a refrigeration cycle, the flow of refrigerant is controlled by
A. compressor
B. condenser
C. evaporator
D. expansion valve
E. all of the above.
Explanation:
70. Vertical lines on pressure-enthalpy chart show constant
A. pressure lines
B. temperature lines
C. total heat lines
D. entropy lines
E. volume lines.
Explanation:
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